| 钾硅肥配施对旱地胡麻干物质积累及籽粒灌浆的影响 |
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| 引用本文： | 苟振宇,郭丽琢,高玉红,夏张祥,王月萍,刘亚辉.钾硅肥配施对旱地胡麻干物质积累及籽粒灌浆的影响[J].中国农学通报,2021,37(20):17-25. |
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| 作者姓名： | 苟振宇 郭丽琢 高玉红 夏张祥 王月萍 刘亚辉 |
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| 作者单位： | 1.甘肃农业大学农学院,兰州 730070;2.甘肃省干旱生境作物学重点实验室,兰州 730070 |
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| 基金项目： | 国家现代农业特色油料产业技术体系专项“养分管理与高效施肥岗位”(CARS-14-1-16);甘肃农业大学伏羲杰出人才培育计划“伏羲杰出人才项目”(Gaufx-02J05);甘肃农业大学干旱生境作物学重点实验室主任基金“胡麻轮作系统不同粒级土壤团聚体与氮素转化利用关联机制”(GSCS-2020-Z6) |
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| 摘 要： | 为探明钾硅养分耦合的产量调控效应,以2个胡麻品种为试验材料,通过裂区设计,研究了钾肥（不施钾、52.5 kg K2O/hm2和105 kg K2O/hm2）和硅肥（不施硅和90 kg SiO2/hm2）用量对胡麻干物质积累及籽粒灌浆特性的影响。结果表明：胡麻品种之间的干物质积累和灌浆特性具有显著差异。施钾显著提高了出苗之后的干物质积累量,2个用量水平平均较不施钾提高11.85%~20.49%,施钾量的增加提高了分茎—青果期间的促生作用;施钾提高了灌浆平均速率,延长了快增持续期、缓增持续期和灌浆活跃期,籽粒产量提高10.79%~19.52%。硅肥对干物质积累和籽粒灌浆无显著的主效,但低供钾下施硅干物质积累量增加了27.96%,钾硅互作影响快增持续期的灌浆速率。与试区相同的土壤肥力条件下,52.5 kg K2O/hm2钾肥用量具有显著的促生和增产作用,低供钾配施硅肥具有一定的促生作用。
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| 关 键 词： | 胡麻 钾肥 硅肥 干物质积累 籽粒灌浆 |
| 收稿时间： | 2021-03-15 |
Effects of Combined Application of Potassium and Silicon Fertilizer on Dry Matter Accumulation and Grain Filling of Oil Flax |
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| Gou Zhenyu,Guo Lizhuo,Gao Yuhong,Xia Zhangxiang,Wang Yueping,Liu Yahui.Effects of Combined Application of Potassium and Silicon Fertilizer on Dry Matter Accumulation and Grain Filling of Oil Flax[J].Chinese Agricultural Science Bulletin,2021,37(20):17-25. |
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| Authors: | Gou Zhenyu Guo Lizhuo Gao Yuhong Xia Zhangxiang Wang Yueping Liu Yahui |
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| Institution: | 1.College of Agronomy, Gansu Agricultural University, Lanzhou 730070;2.Gansu Provincial Key Lab of Arid Land Crop Science, Lanzhou 730070 |
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| Abstract: | To explore the regulation effect of potassium (K) and silicon (Si) coupling on yield, two oil flax varieties were used to study the effects of K (0, 52.5 and 105 kg K2O/hm2) and Si (0 and 90 kg SiO2/hm2) amount on dry matter accumulation (DMA) and grain filling (GF) characteristics by split plot design. The results showed that there were significant differences in DMA and GF characteristics between the varieties. K application significantly increased the DMA after emergence stage, which was increased by 11.85%-20.49% on average under the two dosage levels than that under no K treatment. K amount increase enhanced the growth promoting effect during the period from branching to green fruit; K increased the average grain filling rate, prolonged the duration of rapid growth period, slow growth period and active grouting period, and increased grain yield by 10.79%-19.52%. Si had no significant main effect on DMA and GF, however, low K supply accompanied by Si increased DMA by 27.96%, and the interaction between K and Si affected GF rate of rapid growth period. Under the same soil fertility condition as the test area, K fertilizer dosage of 52.5 kg K2O/hm2 has a significant growth-promoting and yield-increasing effect, and low K supply combined with Si fertilizer has a certain growth-promoting effect. |
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| Keywords: | oil flax potassium fertilizer silicon fertilizer dry matter accumulation grain filling |
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